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Bridging Space and Time: Resolving the Temporal Dynamics of the Seminiferous Epithelial Cycle Using Spatial Transcriptomics
Bridging Space and Time: Resolving the Temporal Dynamics of the Seminiferous Epithelial Cycle Using Spatial Transcriptomics
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202104749
- ISBN
- 9798290652931
- DDC
- 591
- 서명/저자
- Bridging Space and Time: Resolving the Temporal Dynamics of the Seminiferous Epithelial Cycle Using Spatial Transcriptomics
- 발행사항
- [Sl] : California Institute of Technology, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 131 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-01, Section: B.
- 주기사항
- Advisor: Cai, Long.
- 학위논문주기
- Thesis (Ph.D.)--California Institute of Technology, 2025.
- 초록/해제
- 요약Biology is inherently spatial, with tissue architecture and cell-cell interactions shaping dynamic developmental and homeostatic processes. In this thesis, we harness high-resolution spatial transcriptomics via RNA seqFISH+ to show how spatial information can be used to resolve temporal information in complex tissues, using adult mouse spermatogenesis as a model. By profiling 2,638 genes in over 216,000 cells, we find that each seminiferous tubule cross-section represents a distinct timepoint of the seminiferous epithelial cycle, and collectively all tubules form a circular topology in gene expression space that precisely aligns with the known 12-stage progression. Intriguingly, Sertoli cells exhibit a robust cyclic transcriptional program synchronized with germ cell differentiation, raising the question of whether this cycle is driven solely by germ cells or whether Sertoli cells display an intrinsic cyclic expression profile. To address this, we ablate differentiating germ cells using a DNA alkylating agent, busulfan. In this model, despite the lack of differentiating germ cells, Sertoli cells maintain much of their cyclic expression suggesting an autonomous cycle that partially dephases without germ cell input. Integrative analyses suggest that the underlying mechanism of this oscillation may involve an innate retinoic acid metabolic cycle and/or an interconnected transcription factor network. Finally, we discuss how these findings broaden our understanding of tissue processes and propose that spatial transcriptomics can be adopted to reconstruct temporal dynamics for many tissues from static snapshots.
- 일반주제명
- Embryos
- 일반주제명
- Gene expression
- 일반주제명
- Bar codes
- 일반주제명
- Spermatogenesis
- 일반주제명
- Hybridization
- 일반주제명
- Insects
- 일반주제명
- Biology
- 일반주제명
- Genomics
- 일반주제명
- Stem cells
- 일반주제명
- Geometry
- 일반주제명
- Morphology
- 일반주제명
- Cell division
- 기타저자
- California Institute of Technology Biology and Biological Engineering
- 기본자료저록
- Dissertations Abstracts International. 87-01B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520260202104749
■006m o d
■007cr#unu||||||||
■020 ▼a9798290652931
■035 ▼a(MiAaPQ)AAI32151320
■035 ▼a(MiAaPQ)Caltech17219
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a591
■1001 ▼aChakravorty, Arun.
■24510▼aBridging Space and Time: Resolving the Temporal Dynamics of the Seminiferous Epithelial Cycle Using Spatial Transcriptomics
■260 ▼a[Sl]▼bCalifornia Institute of Technology▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a131 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-01, Section: B.
■500 ▼aAdvisor: Cai, Long.
■5021 ▼aThesis (Ph.D.)--California Institute of Technology, 2025.
■520 ▼aBiology is inherently spatial, with tissue architecture and cell-cell interactions shaping dynamic developmental and homeostatic processes. In this thesis, we harness high-resolution spatial transcriptomics via RNA seqFISH+ to show how spatial information can be used to resolve temporal information in complex tissues, using adult mouse spermatogenesis as a model. By profiling 2,638 genes in over 216,000 cells, we find that each seminiferous tubule cross-section represents a distinct timepoint of the seminiferous epithelial cycle, and collectively all tubules form a circular topology in gene expression space that precisely aligns with the known 12-stage progression. Intriguingly, Sertoli cells exhibit a robust cyclic transcriptional program synchronized with germ cell differentiation, raising the question of whether this cycle is driven solely by germ cells or whether Sertoli cells display an intrinsic cyclic expression profile. To address this, we ablate differentiating germ cells using a DNA alkylating agent, busulfan. In this model, despite the lack of differentiating germ cells, Sertoli cells maintain much of their cyclic expression suggesting an autonomous cycle that partially dephases without germ cell input. Integrative analyses suggest that the underlying mechanism of this oscillation may involve an innate retinoic acid metabolic cycle and/or an interconnected transcription factor network. Finally, we discuss how these findings broaden our understanding of tissue processes and propose that spatial transcriptomics can be adopted to reconstruct temporal dynamics for many tissues from static snapshots.
■590 ▼aSchool code: 0037.
■650 4▼aEmbryos
■650 4▼aGene expression
■650 4▼aBar codes
■650 4▼aSpermatogenesis
■650 4▼aHybridization
■650 4▼aInsects
■650 4▼aBiology
■650 4▼aGenomics
■650 4▼aStem cells
■650 4▼aGeometry
■650 4▼aMorphology
■650 4▼aCell division
■690 ▼a0287
■690 ▼a0306
■690 ▼a0729
■71020▼aCalifornia Institute of Technology▼bBiology and Biological Engineering.
■7730 ▼tDissertations Abstracts International▼g87-01B.
■790 ▼a0037
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17358768▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


